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VASTRAJET
Vertical Check
The vertical alignment test is performed to check the vertical alignment of all heads with reference to the
Magenta head. To execute vertical alignment test, click on the
Vertical Check
button on the
Calibration
Wizard
.
Samples of Good and Bad Vertical Alignment Test Result is shown in the below figure:
Fig 63: The Good and Bad Vertical Alignment Test Result
When a Print Head is aligned with the reference Print Head (Magenta), then in the test print this would be
evident by perfectly aligned vertical nozzle lines. In case of vertically misaligned Print Head, its nozzle lines
would be either above or below the reference head’s nozzle lines.
Similarly, check for other colors (Black,
Magenta, and Yellow) with the reference color (Magenta).
Note
: During the mechanical checks, it may possible that it will disturb the angle check or vertical check.
Thus, repeat the mechanical check until the perfect alignment condition is achieved.
After performing the above mechanical checks, please verify the results of bi-direction calibration, left &
right alignment, and step calibration mentioned as below.
Horizontal Calibration
Horizontal Calibration checks the bi-directional, left, and right alignment and corrects it by adding or
subtracting the correction value from the default set value. It has to be performed for each print mode,
whichever is required. Let’s discuss each type of horizontal test one by one.
Bi-direction Calibration
Bi-direct
ional calibration is performed to achieve dot placement accuracy between the “Left to Right” and
“Right to Left” print sweeps. If the bi
-direction offset value is correct, the Left to Right test print would align
accurately with the Right to Left test print at
“0”
position. In case of error in the Bi-Direction offset, the Left
to Right and Right to Left print would align at some other point on the scale.
